Scale



Aug. 30,1927. ,64 ,836

' G. W.KEPLER 'SCALE Filed April 27, 1920 2 Sheets-Sheet 1 Aug. 30,1927. ,6 0,836

- G. W. KEPLER SCALE Filed April 27, 1920 2 Sheets-Sheet 2 Patented Aug. 30, 1927.

' onirro STA Tris IPA-TEN T OFFICE.

GEORGE W. Kerwin; or DAYTON; OHIO, AssIGnOR, BY Mnsnn ASSIGNMENTS, TO DAYTON SCALE COMPANY, OF DAYTON, OHIO, CORPORATION OF nEw nnsEY.

SCALE.

ApplicatioirfiiedApril 27, 1920. Serial No. 376,914.

In weighing scales; particularly those of the so-called computing type regulations have been laid down by various bureaus ot weights and measures proscribinp; the

clear interval between the indicating lines. That of the relatively heavy parts. The present lnventionhas 1s to say ona 30 lb. chart with 'price capacity values of 60 cents a pound the grad nations are as close together asis possible to give a direct reading from the graduated lines of one cent weight value intervals and with charts having higher price values per pound to permit tl obtain cent values'the rl-zgulations 1e operator to estimate by reading between the lines which indicate two-cent values. These restrictions as tool-ear interval have precluded the use of scales hav? a high weighing capacity for highconnnodity prices.

to be weighed are valued at $1.

For example, it the commodities. a" pound.

the usual limit 01 weighing capacity which can be directly indicated on the Chart is about 10 pounds it the pro-per clear interval is retained and cent intervales are .mci-

cated. While it would seem that greater clear intervals could be obtainedby IDCI'QZIS- ing the chart diameter this has been tound impracticable in practice because charts necessitate larger drum and this increases the weight to be moved by the scale to such an extent as to cause errors in drum displacement, due to the inertia and friction the increasing of tln-iindicating capacity of a scale. When lncorporated 1n a'scale of the drum type having a computing chart on its periphery a '0 I I means for indicating a given range or the present invention provides weights and prices for one revolution ot the drum and, for indicating a second range of posed an It has a double disposed d not disposed side by side. 7

heretofore been proposedto have =setotweight and price numerals side byside and to shift a. shut- .for its object 7 vent to Koene No. 770,810. However, the con struction therein shown depends upon a manual displaced counterbalance for tl e action of the shutter and is notadaptable to an automatically counterbalanced scale as the friction loadwould be excessive. The structure set forth in the present invention increases the capaclty automatically and without imposing such a load as to effect the accuracy of an 'autonnitically counterbalanced scale or necessitate the use of a llltllflr ually set counterbalance in place of the auto- .matic counterbalance.

As an example of one of the advantages of the present invention, a scale of the type new used having a 30 pound chart to-1 00 cents a pound commodity value, would have 1800 graduations for cent values. :lVit-h commodity values of $1.50 a pound the capacity oflsuch. a scale would be decreased to about "give'the minimum-limit of clear interval further weighing capacity could not be obtained without sacrificing commodity value capacity. lVith my improved invention I utilize a chart so graduated as to show 10 pounds on one revolution and to indicate from 10 to 20 pounds on the second revolution. This would give 1500 gfratluations per revolution for the price values, thereby giving agreater clear interval than heretoiore and witha greater weighing capacity at the higher pri e per pound. I

To carry outthe invention 1 utilize the principle which is broadly disclosed in the Berger Patent No. 1295.842.

lVhile my invention is particularly adapted to computing scales of the drum type its application is also valuable in ordinary weight-indica-ting scales to increase the in? dicating capacity thereof and to dispense with doubling weights orcapacity weights. The invention may also be applied to various other types of scales.

12 pounds,:whicl1 would give 1800 grzidual.

Fig. 1 shows d1agrranl'natic manner one einhod lent oi nw invention in which a color litter is utilized to chance the re w of the indication the weight in lica' c inple'hs a. revolution.

Fig. shows another embodiment: o invention in which a plurality of li employed omitting rays of different character which permit the reading of one or on other set (it graduations depending upon the load upon the scale.

Fitz. 3 shows an einhodiniei'rt w iirh i coinhination of the showing of l and 2 and in whi ch either method of reading: may be employed.

Fig". 4 shows an enlar and ray filter.

Fig. 5 shows an ci'ilarged detail view 0 the weighing and price chart used tor en'ihooiinents shown in 1. and

Fig. 6 shows an application ot the inwtion to the ordinary dial type ii. wcighir scale.

In the d 'awings 10 is the scale platform and 11 the lever or scale beam which is tulcrumed at 12 and upon which the plati'o 't the rests. The free end of the lever is c niected to a draft rod 13 which through the usial eqializer har connects with the counterbalanc'ing springs 14 and to the racks 15 which mesh with pinious 16. These pinions turn a drum shaft which rotates a dr nn 17 car rying a weight and price chart 18 on. its periphery. The checl: and other details are not herein shown they are sii'i'iilar to those on numerous sci les now on the market. Means are provided for electrically illumiiating the chart when a load is upon the scale. These means include a lamp 19 and a reflector 20. The means for c mtrolling the circuit to the lamp may he of the form shown in the Bane and Crane Patent- LTO. 937,573, Oct. 19, 1909.

hen a load is placed on the scale platform the drum 1'? will he turned proportionally to weight. The chart l8 shnwn in Fig. 5 is provided with a series of nuu'ierals 21 designating weights which numerals are printed in green. These i'iumerals are disposed ahout the periphery of the chart and their range from 0 to 10 pounds for one complete revolution. of the chart. Subsantially superimposed upon these weight numorals are a second set of wei; ht nun'ierals 22" which range from 10 to 20. 'lhese weight numerals are printed in red. The graduation lines, to which both sets of numerals apply are preferably printed in h aclz, although these aduat-ion lines could he half red and half green desired. Each green number hears a predetermined relation to its corr spoi ding red numeral. In cachcase the red Lineral repr scnts a quantity which dill'crs from the green numeral by hie. weight of the scale or 111 this case 10 it. 'um- U up: 1 int wen i inc ounce m uspotu .e nt

the even pound values I have shown the common l' l t .yures in olaci-r; l'or example, :tor a 0 pound t1 ounce h th the S and the Zero are shown in ilack and with 10 pounds ('3 ounces the O and 8 are in black and the prelir; 1 is in red as indicated by the reference char 2? '1' and Z) on Fig. 5: The con'lmon nuin the red and green numerals 22" could be similarly printed it so de- Chili scale the dilierence would It desired, l. e common numerals which are jointly u i l to make the green and red could be printed in hlaclr.

in the Berger patent heretofore referred i it is explained that red characters, if "iewed tl'n'ough a green :lilter or with grcer ht will appear hlacl; and QICC'I. chi rectors *cd under the same conditions will he invisible. Green characters on the other hand, it viewed through a red tilter or with red light appear hlacl; and red characters ll he invisil'f Black chars. or lines viewed under either cha 'act r oi h it apl hlac l us principle is eu'uihoyed for bringing into View one of value and wei 'ht numerals and rei'idering the other loadingset invisible in accordance with the the scale.

In Figs. 1 and 3 a color filter or color screen is provided which has two screens 25" and 25 one being of red transparent glass and the other of green glass. The screen is carried by a rod 26 connected with a lever 27 and nornjially held so as to retain the red screen in front 01 the reading line or index ot the chart by means of a spring 28. The parts are retained in this position during the weighing of commodities whose weight hetween Zero and 10 pounds (the one revolution weight capacity of the chart). With these conditions the operator reads the green weight and price values which tlu'oue'h the filter appear black or the comhined green and hlacl: figures which all appear as black. The red characters are now invisible. When a load in excess of 10 pounds is placed upon the scale platform abutment carried by the rack rod and descending proportion-- ally to the load, reaches a position to permit apivo'ted contact 31 'nori'nally supported :relay establishes a maincircuit to a solenoid magnet 33 which, then clraws down lever 27 elevating rod 26 and placing the green screen in front of the chart at the reading line. The'red weight'an'd price numerals 22 and 24 now are visible inblack and the green numerals 21 and 245 are rendered invisible. In a similar manner figures which have part'redandpart blackcharacters all appear as black. Currentcontinues to How in the solenoid circuit until the commodity is removed from the platform or until such weight is IGIDOVQd'iLS to permit the drum to rotate reversely past the 10 pound-point. At

' this time the contact 31 is again picked up by the abutment and the relay circuit broken. This breaks the solenoid circuitand the spring then returns the red color screen to position. The action of changing the screens from red to green and back from green to red is entirely automatic and depends upon the loading of the scale. I also provide a handle 34 for operating the lever 27 by hand and a suitable manually actuated catch 35 for retaining the rod 26 in elevated position. These parts may beused should current be interrupted for any reason. The operator would of course have to determine from the chart whenthe" lever should be thrown one way or the other.

In Fig. 2 I employ no color filter and utilize two lights, one marked 36 which is adapted to give out greenlight and a second marked '37 which gives a red light. "A suitable reflector 38 is provided to reflect these light rays of the chart 18. With red illumination the numerals of Weight and price corresponding to the weights and prices to load is placed on the scale and this contact remains closed during the entire weighing operation. Contact 40 is timed to establishbe displayed for the first revolution of the drum are visible and with green illumination the second revolution numerals are visible.

Black characters will appear black viewed under either characterof light. To control the lights I employ two pivoted contact blades 39 and 40 co-operating with abutments 41 and 42 and adapted to establish contact with points 43 and 44. Contact is' established between 39 and 43 as soon as a contact with 44 directly after one revolution of the drum is completed and this contact will be broken just as soon as the drum has receded back from this one revolution point. Considering a weight of say one pound on through wire 53, relay blade 54, wire 55 to red light 37, thence through wire 56 to ll116- 45 and back to source B. The red light re mains in circuit for all weights weighed from O to 10 pounds. After 10 pounds is reached andexceeded this light is cut out of circuit in the following manner. Current flows from, source B through line 45, wire 57, contacts 44, 40, wire 58, relay :magnet 59, wire 60, line 52, and back to source B. Then energiz'ation ofrelay magnet 59 drawsblade away frointlie end of wire 49 andthus breaks the circuit to the redlight 37. The blade 50 establishes contact with" the end of a wire 61 and this establishes a circuit to light the green light .36. traced as follows. 1 From source B through wire 62, green light 36.,wire 61, relay blade 50.wire 51, 52 and back to source B.

The interruption of the circuit at the con tacts 40-44 immediately de-energizes the relay 59 and'bre'aks the circuit tothe green light. Concurrently the relay blade 50 falls tolower position and re-establishes the red light'circuit, I p I Fig. shows a form ofthe invention which embodies both liliGfOlll'lS heretofore described. It d'esire-dth-e color filtern ethodof changing theindications can be used in which" case the same" circuit-controlling means will throw in circuit the solenoid through wires 'and 71. The lights 36 and This I circuit is l l U U lights the uncolored bulbs would be replaced with green and red bulbs and the color screen would be. swung to extreme position by hand lit) to permit a clear opening 25 to be in alignment with thereading line or index of the chart.

position by a manually actuated catch 30 havingtworemaining notches 67 and 68..

WVith the upper notch 67 engaged the color filter would be in clear position and the second notch 68 would'be used for retain ng thegreen color filter before the chart when the parts'are operated by hand.

scale havinga pointer 73 swinging over dial 74 having a: green series of weight characters 21 and a red series'22". One or the other of the series will be rendered visible dependingnpon the character of illumination provided by lights 36 and 37.

The parts would be retained in this 1 Ora Fig. 6 shows the well known dial type It will be understood that the color charill) acteristics of light may he changed either by the filter means or by the vari-colored lights. llurthcrinore the identical result would he attai (lit a white light were a1.rat-i ed to ret act upon the numerals and it' suitable filter ne were provided for altering the olor cliaracteristic-s n the reflected hung-re of the ninnerz the present applica'tion when rc'iei nee is made to alter- "E If); the color characteristics of light upon the numerals it will he undershiod that all equiv-- alent methods of char ging visibility are included. I

It will also he understood that when the conihined colored and black numerals are.

used lhatthe col ln ,7 t the intermediate weights are shown with the red pretii: nuincral l (ZHJUlIv-il 1'). For illustration 1 have shown uiall lilacl: Zeros marked 7/ opposite the snpenfinim nuineals ll-l and l O-O. this coniliiirition may he use; thrmighout the chartif (lo .ed and the colored prelix nunierzls may he disposed side by side but prel erahly they are superimposed as shown to save chart space.

H will. he understood that while the constri ction illustrated in Fig. l. is shown as haV-- i movable hand or index and a stationary ts may be reversed andthe hand :lionary and the chart rotated if de sired. It will he understood that in all of the :t'orn'is of invention illustrated, the chart and index means are .reaitivelg dis 'ilacean le to the applied loads.

leis and other like "ratilms to the particular nnhodnnent shown are to he cons died scope of the appended claunr-x.

li hat cla n is:

l. in a stile having suppoi; tor the oeds to he Weurliied, an automatic counteracting: iunnerals atthe index position Itl'OlTl one set to the other. I

2. ln a scale, in combination, a sui iport :tor

the goods to he veighed, automatic loadcounterhalancing means therefor, an index, a

Weight-indicator having a plurality of of indicating numerals, each said set having as withir the .1 halance thercli r, a relatively dlsplaceahle We ght indicator and index means, a plu coaoting numerals registeringconcurrently With said indent, and automatic means for rendering said coacting numerals of one or another set Visible in accordance with the applied load.

3. In an automatic scale, in coi'nhination goods support, wrneglitaindicato'r havine; 1

plu :ality ol sets of in mating ninncrals, each set havingcoacting numerals registering: concurrently at the reading point, and ueight-controlled means for so tirelv controlling the visibility of said se 0 coactiiug numerals in acordance with the load ap plied to the goods supp ')--t.

l. In an autouuitie scale, a goods support, a u'eie a plurality of sets of indd; a] hav up; cone each s ing concurrentl a for selectively coir" sets of coactin illed means 2 and Wciifhw outrolle:

l are:

i rhen pre-J otl tllt letoriniue-l 1 the joods su niiort are exceed scam in couihinetio a no:

support, a Wei t-indioator having a r; lity of sets of intlicatiire' numerals Inca for changing the visihility ol nunerals (i se m pr-za'ide alternate i '1' said sets and means: ogtverahle OlllV ipon a predei mined load pl :d upon tlr goods support itoi r *lhz, ziid lirst named means to inc a the indicati; pacit of the scale. i

()Qln a scale, in combination, a

port, a weig -indicator havi .(I a or sets 7 1 new no or;

1M hle,

upon n p o a r uy ot-the do. no, in (jfOllllJlllzltlOlL a e t indicator hai' I raced upon the goods sup renderinvi:.-:il; le the portion reading; line of one at the Set-1 in d For rendering the eorresooudi. ot the other set Visible, Wherchv i catii g capacity of the scale int-rear means having: provisions for cans. portion of he first lltl'zllIlOIl-(l set to.he risih and the nortien oil the second inent-imicd operable Ll l V oer uieighin operations including devices for altcrin he color characteristics oi the light upon s lor YQlQCllv'GlY rendering visible one or ano he ale and for concm invisible. y 3 v- 9, In a scale, inc'ombination a goodssuir port, a weight-indicator liminga plurality of sets of in cating; numeras, and means matically up n a predetermined load being placed upon the goods sup port for alteringthe color character ot'light upon said numerals whereby the visibility of one set of numerals is obscured and the visibility of the other set is increased.

10. In a scale in combination, a weightindicator havingplurality of sets of Weightand price indicating numerals, and means controlled by the applied load Which isbeing' Weighed tor -electively controlling, the visibility of said ot numerals whereby certain sets of numerals are'displayed for certain Weight ranges other sets for other eight ranges. i

ll. In a scale -in eouibinat t a goods Sl'lppOlt; a \vci 'htindicator,'havinc" a pluralitv ot sets oi? indicating i raeralsthereon, ain sets of said numeral: v nliaily supci'in'ipoeed upon others-o rendering one nun'ierals one oi? said sets being); printed. in

green and another t said sets being printed in red meansadaptcd to control the color clnn'acti-xristits of light upon said mnncrals whereby one or the other of said sets rendered visible and the set of the op g iositc color is rendered invisible, and means for rolling; the atorcsaidmeans operable tically when a certain Weight upon eds support is exceedet. v

l: in a scale in combination, an indicating chart and index means for relatively displacing be same by applied loads,said indicating chart having a plurality of indi cating numerals thereon, said nui'nerals conn prising; common bla clrnnmerals and colored prefix numerals, and means for rendering the prefix nun'ieral visible for invisible by Sill altering the color characteristics of light whereby the combined result ot the prefix. numeral and black numeral may be read or the black numerals alone may be read substantially for the purpose described.

lilln a -scale,-in con'ibination, an indicat ing chart and index, means for relatively displacing; the same by applied loads said.

chart having a plurality of indi indicating; eating numeralsthereon, certain common numeralsbeing printed'in black, certain prefix numerals being. printed in red and: green respectively and means tor varying the color characteristics of light whereby under certain light characteristics the black common numerals and the greenprefix numerals by a fixed amount. g scale as set forth 1n claim 14 m v'hich means is provided for selective are visible and the red prefix numerals rendered invisible and whereby under other light characteristics the blaclr common nu morals and the red'pre'lix numerals are visible and the green prefix nun'ierals are ren-L dered invisible;

p 14, Weighing scale comprising in com bination with a chart and index means, of means operable by applied loads for relatively displacing the same, said chart comprising a plurality of indicating numerals each formed otrcommon numerals and a colored prefix numeral, each said combined numeral differing in amount from the amount oteach common numeral by a fixed of a. common num'eral and a pluralitybl'tj 'vari-colored pretixnumerals, each complete numeral formed; by a common numeral, a

prefix of one color dififering from the completenumeral termed by the other colored prefix numeral, and the common numeral 16. A Weighi ly'co ntrolling the: visibility ot the colored prefix numeral whereby a combined mime al may be read or the common numeral may be read alone.

17. A Weighing scale as set forth in claim 15 in which means is provided for selectively controlling the visibility of the col- 'oredpretix numeral whereby a combined numeral may be read or the common nu moral may be read alone.

18. In an. automatic scale, in combination, a movable chart having successive series of indicating numerals. a load support and means controlled thereby for moving said chart, and means supplemental to the aforesaid chart displacing means and controlled by said load support for ai'itomatically select-ively controlling the visibility ofsaid series of indicating numerals;

19. A Weighing scale comprising in combination, a chart, means comprising a load support and load oll'settinp; means therefor tor displacing said chart in accordance with the applied load, said chart having a series of Weight-indicating numerals and a second series ot Weight-1ndicatmg numerals substantially coextensive with said first series in the direction of displacement of the chart,

and means automatically operable by the operation of the scale itself upon a Weighing operation for rendering one series of numerals visible and the other series invisible for a predetermined range of applied loads and for rendering the last mentioned series visible and the first mentioned series invisible for a higher range of applied loads.

2-0. In a scale, in combination, a goods support, a weight indicator having a plurality of sets of indicating numerals, means for changing the Visibility of said sets of numerals to provide alternate Visibility of said sets, and means automatically operable by a predetermined load being placed upon the goods support for controlling said first named means to increase the indicating capacity of the scale.

In testimony whereof I hereto aflix my signature.

GEORGE W. KEPLER. 

